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You searched for: creator:"Konrad,"
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[texts]Die Goldene Schmiede - Konrad
Book digitized by Google and uploaded to the Internet Archive by user tpb.
Downloads: 50
[texts]Partonpier und Meliur: -turnei von Nantheiz.-sant Nicolaus.-lieder und Sprüche; aus dem nachlasse - Konrad
Book digitized by Google and uploaded to the Internet Archive by user tpb.
Downloads: 105
[texts]Das Buch der natür..: Die erste Naturgeschichte in deutscher Sprache - Konrad
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
Downloads: 70
[image]Space EP - Konrad

Downloads: 26
[texts]Das Buch der Natur ...: Die erste Naturgeschichte in deutscher Sprache - Konrad
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Downloads: 103
[texts]Goldene Schmiede [ed.] von W. Grimm - Konrad
Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
Downloads: 30
[texts]Das Buch der Natur ...: Die erste Naturgeschichte in deutscher Sprache - Konrad
Book digitized by Google and uploaded to the Internet Archive by user tpb.
Downloads: 76
[texts]Quatre liures des secrets de medecine, et de la philosophie chimique - Konrad Gesner , Konrad Gesner, (
Book digitized by Google and uploaded to the Internet Archive by user tpb.
Downloads: 76
[texts]Thesaurus Euonymi Philiatri De remediis secretis: liber physicus, medicus ... - Konrad Gesner , Konrad Gesner, (
Book digitized by Google and uploaded to the Internet Archive by user tpb.
Downloads: 33
[texts]Ḳoshmarn ; - Charmatz, Konrad

Downloads: 26
[texts]Transgression to Loop Spaces and its Inverse, II: Gerbes and Fusion Bundles with Connection - Konrad Waldorf
We prove that the category of abelian gerbes with connection over a smooth manifold is equivalent to a certain category of principal bundles over the free loop space. These bundles are equipped with a connection and with a "fusion" product with respect to triples of paths. The equivalence is established by explicit functors in both directions: transgression and regression. We describe applications to geometric lifting problems and loop group extensions.
Downloads: 2
[texts]Stellar Kinematics of the Bulge from HST Proper Motion Measurements - Konrad Kuijken
I report on an ongoing programme of proper motion measurements in the Galactic Bulge, using HST images. As a first application, the data are used to derive the vertical gravitational acceleration on the minor axis of the Galaxy. Implications of the measurement for the flattening of the Galactic potential are discussed.
Downloads: 1
[texts]Simulation of Imaging Atmospheric Cherenkov Telescopes with CORSIKA and sim_telarray - Konrad Bernlohr
Imaging Atmospheric Cherenkov Telescopes (IACTs) have resulted in a breakthrough in very-high energy (VHE) gamma-ray astrophysics. While early IACT installations faced the problem of detecting any sources at all, current instruments are able to see many sources, often over more than two orders of magnitude in energy. As instruments and analysis methods have matured, the requirements for calibration and modelling of physical and instrumental effects have increased...
Downloads: 1
[texts]Fidelity balance in quantum operations - Konrad Banaszek
I derive a tight bound between the quality of estimating the state of a single copy of a $d$-level system, and the degree the initial state has to be altered in course of this procedure. This result provides a complete analytical description of the quantum mechanical trade-off between the information gain and the quantum state disturbance expressed in terms of mean fidelities. I also discuss consequences of this bound for quantum teleportation using nonmaximally entangled states.
Downloads: 1
[texts]An Axisymmetric Distribution Function for the Galactic Bulge - Konrad Kuijken
We describe a method for parameterizing two-integral distribution functions, based on triangular tesselations of the integral plane. We apply the method to the axisymmetric isotropic rotator model for the Galactic bulge of Kent~(1992), and compare the results with observations of proper motions in Baade's Window, and with radial velocity surveys. In spite of mounting evidence from surface photometry and from study of the gas kinematics that the Galactic bulge is not axisymmetric, the stellar kin...
Downloads: 1
[texts]The Basics of Lensing - Konrad Kuijken
The basic equations and geometry of gravitational lensing are described, as well as the most important contexts in which it is observed in astronomy: strong lensing, weak lensing and microlensing.
Downloads: 2
[texts]Non-commutative Real Algebraic Geometry - Some Basic Concepts and First Ideas - Konrad Schmuedgen
We propose and discuss how basic notions (quadratic modules, positive elements, semialgebraic sets, Archimedean orderings) and results (Positivstellensaetze) from real algebraic geometry can be generalized to noncommutative $*$-algebras. A version of Stengle's Positivstellensatz for $n \times n$ matrices of real polynomials is proved.
Downloads: 1
[texts]The Variety of Integrable Killing Tensors on the 3-Sphere - Konrad Schöbel
Integrable Killing tensors are used to classify orthogonal coordinates in which the classical Hamilton-Jacobi equation can be solved by a separation of variables. We completely solve the Nijenhuis integrability conditions for Killing tensors on the sphere S^3 and give a set of isometry invariants for the integrability of a Killing tensor. We describe explicitly the space of solutions as well as its quotient under isometries as projective varieties and interpret their algebro-geometric properties...
Downloads: 2
[texts]Operator Representations of a q-Deformed Heisenberg Algebra - Konrad Schmuedgen
A class of well-behaved *-representations of a q-deformed Heisenberg algebra is studied and classified.
Downloads: 2
[texts]On the moment problem of closed semi-algebraic sets - Konrad Schmuedgen
Let $K_f$ be a closed semi-algebraic set in $\dR^d$ such that there exist bounded real polynomials $h_1,{...},h_n$ on $K_f$. It is proved that the moment problem for $K_f$ is solvable provided it is for all sets $K_f\cap C_\lambda$, where $C_\lambda=\{x:h_1(x)=\lambda_1,{...},h_n(x)=\lambda_n\}$ and $\inf\{h_j(x); x\in K_f\}\le\lambda_j\le\sup\{h_j(x);x\in K_f\}$. New classes of non-compact closed semi-algebraic sets $K_f$ are found for which the moment problem is solvable...
Downloads: 1
[texts]More Morphisms between Bundle Gerbes - Konrad Waldorf
Usually bundle gerbes are considered as objects of a 2-groupoid, whose 1-morphisms, called stable isomorphisms, are all invertible. I introduce new 1-morphisms which include stable isomorphisms, trivializations and bundle gerbe modules. They fit into the structure of a 2-category of bundle gerbes, and lead to natural definitions of surface holonomy for closed surfaces, surfaces with boundary, and unoriented closed surfaces.
Downloads: 2
[texts]CTA simulations with CORSIKA/sim_telarray - Konrad Bernloehr
While current atmospheric Cherenkov installations consist of only a few telescopes each, future installations will be far more complex. Monte Carlo simulations have become an essential tool for the design and optimisation of such installations. The CORSIKA air-shower simulation code and the sim_telarray code for simulation of arrays of Cherenkov telescopes have been used to simulate several candidate configurations of the future Cherenkov Telescope Array (CTA) in detail...
Downloads: 2
[texts]A Strict Positivstellensatz for Enveloping Algebras - Konrad Schmuedgen
Let G be a connected and simply connected real Lie group with Lie algebra g. Semialgebraic subsets of the unitary dual of G are defined and a strict Positivstellensatz for positive elements of the universal enveloping algebra of g is proved.
Downloads: 2
[texts]A Strict Positivstellensatz for the Weyl Algebra - Konrad Schmuedgen
Let $c$ be an element of the Weyl algebra $W(d)$ which is given by a strictly positive operator in the Schr"odinger representation. It is shown that, under some conditions, there exist elements $b_1,...,b_d$ in $W(d)$ such that $b_1 c b_1^* + ... + b_d c b_d^*$ is a finite sum of squares.
Downloads: 2
[texts]Maximum-likelihood algorithm for quantum tomography - Konrad Banaszek
Optical homodyne tomography is discussed in the context of classical image processing. Analogies between these two fields are traced and used to formulate an iterative numerical algorithm for reconstructing the Wigner function from homodyne statistics.
Downloads: 2
[texts]Multiplicative Bundle Gerbes with Connection - Konrad Waldorf
Multiplicative bundle gerbes are gerbes over a Lie group which are compatible with the group structure. In this article connections on such bundle gerbes are introduced and studied. It is shown that multiplicative bundle gerbes with connection furnish geometrical constructions of the following objects: smooth central extensions of loop groups, Chern-Simons actions for arbitrary gauge groups, and symmetric bi-branes for WZW models with topological defect lines.
Downloads: 3
[texts]Commutator Representations of Covariant Differential Calculi on Quantum Groups - Konrad Schmuedgen
Let (G,d) be a first order differential *-calculus on a *-algebra A. We say that a pair (\pi,F) of a *-representation \pi of A on a dense domain D of a Hilbert space and a symmetric operator F on D gives a commutator representation of G if there exists a linear mapping t:G -> L(D) such that t(adb)=\pi(a)i[F,\pi(b)], a,b in A. Among others, it is shown that each left-covariant *-calculus G of a compact quantum group Hopf *-algebra A has a faithful commutator representation...
Downloads: 1
[texts]Transgression to Loop Spaces and its Inverse, III: Gerbes and Thin Fusion Bundles - Konrad Waldorf
We show that the category of abelian gerbes over a smooth manifold is equivalent to a certain category of principal bundles over the free loop space. These principal bundles are equipped with fusion products and are equivariant with respect to thin homotopies between loops. The equivalence is established by a functor called regression, and complements a similar equivalence for bundles and gerbes equipped with connections, derived previously in Part II of this series of papers...
Downloads: 2
[texts]Interplay and competition between superconductivity and charge orderings in the zero-bandwidth limit of the extended Hubbard model with pair hopping and on-site attraction - Konrad Kapcia
We present studies of an effective model which is a simple generalization of the standard model of a local pair superconductor with on-site pairing (i.e., the model of hard core bosons on a lattice) to the case of finite pair binding energy. The tight binding Hamiltonian consists of (i) the effective on-site interaction U, (ii) the intersite density-density interactions W between nearest-neighbours, and (iii) the intersite charge exchange term I, determining the hopping of electron pairs between...
Downloads: 2
[texts]Moduli Spaces of PU(2)-Instantons on Minimal Class VII Surfaces with b_2=1 - Konrad Schöbel
We describe explicitly the moduli spaces $M^{pst}_g(S,E)$ of polystable holomorphic structures $E$ with $\det E\cong K$ on a rank 2 vector bundle $E$ with $c_1(E)=c_1(K)$ and $c_2(E)=0$ for all minimal class VII surfaces $S$ with $b_2(S)=1$ and with respect to all possible Gauduchon metrics $g$. These surfaces $S$ are non-elliptic and non-Kaehler complex surfaces and have recently been completely classified...
Downloads: 1
[texts]On holomorphic functions on a strip in the complex plane - Konrad Schmuedgen
Let $f$ be a holomorphic function on the strip $\{z\in C: -\alpha 0$, belonging to the class $H(\alpha,-\alpha;\epsilon)$ defined below. It is shown that there exist holomorphic functions $w_1$ on $\{z\in C: 0
Downloads: 2
[texts]On Well-behaved Unbounded Representations of *-Algebras - Konrad Schmuedgen
A general approach to the well-behaved unbounded *-representations of a *-algebra X is proposed. Let B be a normed *-algebra equipped with a left action |> of X on B such that (x |> a)^+ b=a^+(x^+ |> b) for a,b\in B and x\in X. Then the pair (X,B) is called a compatible pair. For any continuous non-degenerate *-representation \rho of B there exists a closed *-representation \rho' of X such that \rho'(x)\rho(b)=\rho(x |> b), where x\in X and b\in B...
Downloads: 3
[texts]Measuring the UHE cosmic-ray composition with tracking detectors in air shower arrays - Konrad Bernlöhr
Measuring the angles of muons and electrons in air showers is proposed as a method for studying the primary cosmic-ray mass composition near the knee of the cosmic-ray energy spectrum at a few $10^{15}$ eV. Conventional tracking detectors at existing air shower arrays could serve this purpose, like the CRT detectors at the HEGRA array. When the average radial muon angles are examined as a function of shower core distance, the experimental resolution can be very well calibrated from the tangentia...
Downloads: 1
[texts]Algebras of Fractions and Strict Positivstellensätze for *-Algebras - Konrad Schmuedgen
In this paper we investigate a *-algebra $\cX$ of fractions associated with a unital complex *-algebra $\cA$. The algebra $\cX$ and its Hilbert space representations are used to prove abstract noncommutative strict Positivstellens\"atze for $\cA$. Multi-grading of $\cA$ are studied as technical tools to verify the assumptions of this theorem. As applications we obtain new strict Positivstellens\"atze for the Weyl algebra and for the Lie algebra $\cg$ of the affine group of the real line...
Downloads: 2
[texts]Transition Probabilities of Positive Linear Functionals on $*$-Algebras - Konrad Schmüdgen
Using unbounded Hilbert space representations basic results on the transition probability of positive linear functionals $f$ and $g$ on a unital *-algebra are obtained. The main assumption is the essential self-adjointness of GNS representations $\pi_f$ and $\pi_g$. Applications to functionals given by density matrices and by integrals and to vector functionals on the Weyl algebra are given.
Downloads: 4
[texts]Ludwig Boerne, 1786-1837: Eine biographisch-literarische Studie zur Feier seines ... - Konrad Sittenfeld
Book digitized by Google and uploaded to the Internet Archive by user tpb.
Downloads: 50
[texts]Lateinische Etymologien. Cacus (Volume 12) - Konrad Schwenck
"Lateinische Etymologien. Cacus" is an article from Rheinisches Museum für Philologie, Volume 12. View more articles from Rheinisches Museum für Philologie.View this article on JSTOR.View this article's JSTOR metadata.You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-41250091
Downloads: 17
[texts]Geographie der Griechen und Römer aus ihren Schriften - Konrad Mannert
Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
Downloads: 48
[texts]Geographie der Griechen und Römer aus ihren Schriften - Konrad Mannert
Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
Downloads: 51
[texts]Geographie der Griechen und Römer aus ihren Schriften - Konrad Mannert
Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
Downloads: 36
[texts]Geographie der Griechen und Römer aus ihren Schriften - Konrad Mannert
Book digitized by Google from the library of Oxford University and uploaded to the Internet Archive by user tpb.
Downloads: 32
[texts]De regno Bosporano Spartocidarum ... - Konrad Ortmann
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Downloads: 59
[texts]Weak weak lensing: correcting weak shear measurements accurately for PSF anisotropy - Konrad Kuijken
We have developed a new technique for weak lensing analysis, with which the effect of the point spread function (PSF) on small galaxy images can be corrected for accurately. Rather than relying on weighted second moments of detected images, which we show can leave residuals at the level of a percent in the shear, we directly fit (stacked or individual) galaxy images as PSF-convolved, sheared circular sources...
Downloads: 4
[texts]Shears from shapelets - Konrad Kuijken
Accurate measurement of gravitational shear from images of distant galaxies is one of the most direct ways of studying the distribution of mass in the universe. We describe an implementation of a technique that is based on the shapelets formalism. The shapelets technique describes PSF and observed images in terms of Gauss-Hermite expansions (Gaussians times polynomials). It allows the various operations that a galaxy image undergoes before being registered in a camera (gravitational shear, PSF c...
[texts]Lateinische Etymologien (Volume 12) - Konrad Schwenck
"Lateinische Etymologien" is an article from Rheinisches Museum für Philologie, Volume 12. View more articles from Rheinisches Museum für Philologie.View this article on JSTOR.View this article's JSTOR metadata.You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-41250109
Downloads: 12
[texts]Measuring Quantum State in Phase Space - Konrad Banaszek
In this thesis we present a direct scheme for measuring quasidistribution functions of light. This scheme, based on photon counting, is derived from a simple relation linking the Wigner function with photon statistics. We develop a full multimode theory of the scheme, and show that the principle of the measurement can be straightforwardly generalized to the detection of the multimode radiation. We also discuss practical aspects of the scheme, including statistical error, non-unit detection effic...
Downloads: 10
[texts]Interactions Between Massive Dark Halos And Warped Disks - Konrad Kuijken
The normal mode theory for warping of galaxy disks, in which disks are assumed to be tilted with respect to the equator of a massive, flattened dark halo, assumes a rigid, fixed halo. However, consideration of the back-reaction by a misaligned disk on a massive particle halo shows there to be strong coupling leading to efficient damping (or in some circumstances excitation) of the misalignment, and hence the warp...
[texts]GaaP: PSF- and aperture-matched photometry using shapelets - Konrad Kuijken
We describe a new technique for measuring accurate galaxy colours from images taken under different seeing conditions. The method involves two ingredients. First we define the Gaussian-aperture-and-PSF flux, which is the Gaussian-weighted flux a galaxy would have if it were observed with a Gaussian PSF. This theoretical aperture flux is independent of the PSF or pixel scale that the galaxy was observed with...
[texts]On Coquasitriangular Bialgebras - Konrad Schmuedgen
The paper deals with three topics on coquasitriangular bialgebras. A characterization of universal r-forms in terms of Yetter-Drinfeld modules is given. All universal r-forms for the coordinate Hopf algebras of the quantum groups GL_q(N), SL_q(N), O_q(N) and Sp_q(N) are described. It is well-known that the square of the antipode of a coquasitriangular Hopf algebra A with universal r-form r can be expressed by means of the linear functional f_r(a)=r(a_{(1)}\otimes S(a_{(2)})), a\in A...
[texts]Dark haloes as seen with gravitational lensing - Konrad Kuijken
Dark matter is an important ingredient of galaxies, as was recognised early on by Ken Freeman himself! Evidence for dark matter halos is still indirect, based on analysing motions of tracers such as gas and stars. In a sense the visible galaxy is the mask through which we can study the dark matter. Light rays are also sensitive to gravitational fields, and dark haloes cause observable gravitational lensing effects...
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